27297722709 has 8 divisors (see below), whose sum is σ = 40441070720. Its totient is φ = 18198481788.

The previous prime is 27297722659. The next prime is 27297722713. The reversal of 27297722709 is 90722779272.

It is not a de Polignac number, because 27297722709 - 2⁸ = 27297722453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27297722759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505513357 + ... + 505513410.

It is an arithmetic number, because the mean of its divisors is an integer number (5055133840).

Almost surely, 2^27297722709 is an apocalyptic number.

It is an amenable number.

27297722709 is a deficient number, since it is larger than the sum of its proper divisors (13143348011).

27297722709 is a wasteful number, since it uses less digits than its factorization.

27297722709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011026776 (or 1011026770 counting only the distinct ones).

The product of its (nonzero) digits is 3111696, while the sum is 54.

The spelling of 27297722709 in words is "twenty-seven billion, two hundred ninety-seven million, seven hundred twenty-two thousand, seven hundred nine".